Lets find f^(-1) if y=-2x+1 i’m not sure if the f^(-1)=1+x/2

Close enough, let's do the switcharoo of the variables and solve for "y".

So, again, we have our rules for mapping  to :



To find , we solve for .

(subtract 1 from both sides)
(divide both sides by -2)

That gives us



Now that we have a way of mapping  back to , all we do is swap the domain and range, and we have

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!